NewFake returns an instance of a fake clock.

NewReal returns an instance of a real clock (changing in the very real fourth dimension).

FakeClock represents a fake clock that only moves forward programmically.

FakeTimer represents a single event.

RealClock implements a real-time clock by simply wrapping the time package functions.

Clock represents an interface to the functions in the standard library time package.

Timer represents an individual timer in a clock, either real or fake.